That s because the lion s share of his 7,000 yuan monthly pay goes toward the mortgage on the downtown apartment he bought last year.

It s been almost two years since the Cupertino, California-based company revamped the iPhone for the sixth generation.

In the meantime, rivals like Huawei and Xiaomi Corp. have developed their own cheaper products with similar specifications, while the relative success of the iPhone 6 has made it harder for Apple to sustain its growth rates.After forecasting a second consecutive quarterly sales tumble in April, Chief Executive Officer Tim Cook will reveal the extent of the decline when he reports earnings July 26.

China generates about a quarter of Apple s revenue, and deterioration there accounted for much of the sales drop.Huawei supplied one in four new phones in the three months through May, leapfrogging Apple to become the biggest phonemaker by market share in urban China, according to a Kantar Group study published this month.

So far, it has failed to meet those expectations, even as sales have exceeded forecasts in developed economies, Lamba said.Apple may boost its China sales when the new iPhone arrives later this year, aided by the growing popularity of the App Store and customers tendency to upgrade their handsets every two years.

That s one reason why Huawei and Oppo introduced their flagship phones earlier this year -- to get a head start on Apple.After last year s surge in Chinese phone sales, Apple has reaped the benefit in its App Store, with China overtaking Japan to become the second-biggest source of spending in the shop for mobile games, services, music and more, according to researcher AppAnnie.

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